Touch panel and fabricating method thereof

Abstract

A method of fabricating a touch panel is provided. First, a first substrate having a first electrode layer is provided. Then, a sealant is formed on the first substrate, and the sealant surrounds a periphery of the first substrate to define a closed area. Next, a dielectric material is dripped in the closed area. Then, a second substrate having, a second electrode layer is provided. The first substrate and the second substrate are assembled and joined by the sealant, such that the dielectric material fills the closed area to form a dielectric layer between the first substrate and the second substrate. The touch panel has good quality, and the yield rate of the method of fabricating the touch panel is high.

1 . A method of fabricating a touch panel, comprising:
 providing a first substrate having a first electrode layer;   forming a sealant on the first substrate, wherein the sealant surrounds a periphery of the first substrate to define a closed area;   dripping a dielectric material into the closed area; and   providing a second substrate having a second electrode layer, wherein the first substrate and the second substrate are assembled and joined by the sealant, and the dielectric material fills the closed area to form a dielectric layer between the first substrate and the second substrate.   
   
   
       2 . The method of fabricating a touch panel as claimed in  claim 1 , wherein a method of forming the sealant comprises a printing process. 
   
   
       3 . The method of fabricating a touch panel as claimed in  claim 2 , wherein the printing process comprises screen printing, ink jet printing, offset printing, relief printing, or gravure printing. 
   
   
       4 . The method of fabricating a touch panel as claimed in  claim 1 , wherein a method of forming the sealant comprises a dispensing process. 
   
   
       5 . The method of fabricating a touch panel as claimed in  claim 1 , after the first substrate and the second substrate are assembled and joined, further comprising a curing process for curing the sealant. 
   
   
       6 . The method of fabricating a touch panel as claimed in  claim 5 , wherein the curing process comprises thermal curing, light curing, UV curing, or a combination thereof. 
   
   
       7 . The method of fabricating a touch panel as claimed in  claim 1 , wherein a method of forming the dielectric layer comprises curing the dielectric material in the closed area. 
   
   
       8 . The method of fabricating a touch panel as claimed in  claim 1 , further comprising forming a plurality of supports on at least one of the first substrate and the second substrate, wherein the supports are disposed in the closed area. 
   
   
       9 . The method of fabricating a touch panel as claimed in  claim 8 , wherein the sealant and the supports are simultaneously formed. 
   
   
       10 . The method of fabricating a touch panel as claimed in  claim 8 , wherein a method of forming the supports comprises a spraying process for spraying a plurality of ball supports in the closed area. 
   
   
       11 . The method of fabricating a touch panel as claimed in  claim 8 , wherein a method of forming the supports comprises a photolithography process. 
   
   
       12 . The method of fabricating a touch panel as claimed in  claim 8 , wherein a method of forming the supports comprises a dispensing process. 
   
   
       13 . The method of fabricating a touch panel as claimed in  claim 8 , wherein a method of forming the supports comprises a printing process. 
   
   
       14 . The method of fabricating a touch panel as claimed in  claim 13 , wherein the printing process comprises screen printing, ink jet printing, offset printing, relief printing, or gravure printing. 
   
   
       15 . A touch panel, comprising:
 a first substrate, having a first electrode layer;   a second substrate, having a second electrode layer;   a sealant, disposed between the first substrate and the second substrate, and defining a closed area with the first substrate and the second substrate; and   a dielectric layer, disposed in the closed area.   
   
   
       16 . The touch panel as claimed in  claim 15 , wherein the first electrode layer comprises a plurality of strip electrodes. 
   
   
       17 . The touch panel as claimed in  claim 15 , wherein the second electrode layer comprises a plurality of strip electrodes. 
   
   
       18 . The touch panel as claimed in  claim 15 , further comprising a plurality of supports disposed in the closed area. 
   
   
       19 . The touch panel as claimed in  claim 18 , wherein the supports are a plurality of pillar supports. 
   
   
       20 . The touch panel as claimed in  claim 19 , wherein a material of the pillar supports is one selected from among a photoresist material, a light curable material, and a thermally curable material. 
   
   
       21 . The touch panel as claimed in  claim 18 , wherein the supports are a plurality of ball supports. 
   
   
       22 . The touch panel as claimed in  claim 21 , wherein a material of the ball supports comprises silicon dioxide or glass. 
   
   
       23 . The touch panel as claimed in  claim 15 , wherein the first substrate is disposed between the first electrode layer and the dielectric layer. 
   
   
       24 . The touch panel as claimed in  claim 15 , wherein the first electrode layer is disposed between the first substrate and the dielectric layer. 
   
   
       25 . The touch panel as claimed in  claim 15 , wherein the second substrate is disposed between the second electrode layer and the dielectric layer. 
   
   
       26 . The touch panel as claimed in  claim 15 , wherein the second electrode layer is disposed between the second substrate and the dielectric layer. 
   
   
       27 . The touch panel as claimed in  claim 15 , wherein a material of the dielectric layer is one selected from among a thermal curable material, a light curable material, and a UV-thermal curable material.